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My karcher is leaking water from the front of the machine

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Why is smoke coming from karcher pressure washer and leaking from underneath


You need to make sure you have water flowing through the machine before you turn it on. The pump could be bad in it and or the seal make have broken which is causing the Ayer o leak out.

Feb 04, 2015 | Karcher Garden

1 Answer

Hi i have a karcher k4.91 and it is lossing pressure and leaking from inside the casing..what would be the likely cause.. many thanks


This could be a problem in the pump, the seals may have been damaged if it is an older machine through age. You could check a local karcher supplier/dealer and they should be able to replace that for you. Another problem maybe that an inlet elbow could be loose and does not seal correctly so it may need replacing.

These solutions depend on what area inside the machine the water is leaking from.

Jan 11, 2011 | Karcher Garden

2 Answers

Just started using my kb4040 and water i s leaking


Sounds like the water seals are bad. For Karcher parts go here: LINK

Jan 18, 2010 | Karcher 1750 psi Electric Pressure Washer

1 Answer

I have a karcher 495, it is puslating when it is


It sounds like there may be a pressure leak somewhere in the system. The machine cuts off when there is no flow of water past it. If it is leaking then there is intermittent flow. Which would make the machine run then stop continuously.

Nov 15, 2009 | Karcher K 5.85 M Electric Pressure Washer

1 Answer

Karcher 3300 G water leak out rear of unit from white plasticplug


if its just a plug, remove it with an allen key and wrap a couple layers of teflon tape around it. That should stop, or at least slow down any leaks that are coming out of the threads.

Jun 19, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Karcher K3.91 compressor run for a few seconds every 10-15 second


They have a problem. I removed both valves and lubed with lithium grease as I was told. Unit is now working for how long who knowes.

May 18, 2009 | Karcher PSI Electric Pressure Washer

1 Answer

Hi,karcher hds hot pressure washer now pressure when you pull trigger and pulses.


what you need to do is, take the screw fitting which goes to the water tank off, then the one that goes from the water tank to the pump head .
then put the one that was in the first place going to the water tank on to the pump and force feed with water.
see if you can see water leaking from any where seals hose.
try running the machine to check the pressure.
if water leaking from pump head you need seals.

Mar 21, 2009 | Karcher Garden

2 Answers

Water gushes out of the inside of my Karcher jet washer.


you can sometimes seal the water leak from the inside as I think your water inlet case has split

Jan 07, 2009 | Karcher Quick Connect Nozzle Set

2 Answers

Karcher k7.80 pressure washr


I have a Karcher K 3.86 M electric PW with a similar problem: water leaks from the pump near the outlet and the pressure surges on and off continuously at intervals of 1-2 seconds. The leak appears to be coming from a very thin crack in the plastic pump head in what I think is the "unloader" valve portion. I read elsewhere that if you leave water in these PW's and it freezes it will crack, causing leaks. I don't know how you can empty all the water out so I think we must store these PW's in areas that won't freeze in winter.

Jul 29, 2007 | Karcher 2500 PSI Pressure Washer

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